ALEXANDRIA, Va., March 12 -- United States Patent no. 12,245,750, issued on March 11, was assigned to OLYMPUS Corp. (Tokyo).

"Insertion device and endoscope" was invented by Takuto Yoshinaga (Hino, Japan), Tsukasa Ota (Hachioji, Japan) and Wataru Matsuura (Fuchu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An insertion device includes: a tube having a channel hole and a communication hole; a frame member having a tube insertion hole and a forceps channel and disposed to cover a periphery of the communication hole; and a closing member configured to close the channel hole in the tube at a position closer to a proximal end side than the communication hole and having a distal end surface disposed to fa...